Supplemental Balance Sheet Information - Amounts Reclassified from AOCI (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of products sold					$ (2,539)	$ (2,312)	$ (2,263)
Net reclassification from AOCI for cash flow hedges included in income and gain from the sale of equity method investment to related party					0	0	13
Less: Income tax expense on reclassification from AOCI included in income tax expense					238	63	(740)
Selling and administrative expenses					(298)	(304)	(302)
Gain on sale of discontinued operations, net of tax	$ 279	$ 0	$ 0	$ 0	0	279	0
Net income					88	510	991
Derivatives | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of products sold					(6)	(10)	(8)
Net reclassification from AOCI for cash flow hedges included in income and gain from the sale of equity method investment to related party					0	0	1
Less: Income tax expense on reclassification from AOCI included in income tax expense					(3)	(4)	2
Net income					(3)	(6)	(9)
Pension and postretirement benefits | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of products sold					(8)	(1)	1
Less: Income tax expense on reclassification from AOCI included in income tax expense					(10)	(7)	(1)
Selling and administrative expenses					(5)	(12)	(5)
Gain on sale of discontinued operations, net of tax					(11)	(3)	(4)
Net income					(14)	(9)	(7)
Foreign Currency Translation | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling and administrative expenses					0	0	(6)
Net income					$ 0	$ 0	$ (6)